WO2010029573A2 - Ensemble intégré embrayage à bain d’huile et amortisseur pour une transmission et son système de gestion de l’huile - Google Patents

Ensemble intégré embrayage à bain d’huile et amortisseur pour une transmission et son système de gestion de l’huile Download PDF

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Publication number
WO2010029573A2
WO2010029573A2 PCT/IN2009/000446 IN2009000446W WO2010029573A2 WO 2010029573 A2 WO2010029573 A2 WO 2010029573A2 IN 2009000446 W IN2009000446 W IN 2009000446W WO 2010029573 A2 WO2010029573 A2 WO 2010029573A2
Authority
WO
WIPO (PCT)
Prior art keywords
clutch
oil
transmission
torsional damper
flywheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IN2009/000446
Other languages
English (en)
Other versions
WO2010029573A3 (fr
Inventor
Johnson Douglas
Rodegheiro Reno
Pramod Sudhakar Mahajan
Satish Wagh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Priority to EP09812796.2A priority Critical patent/EP2324261A4/fr
Publication of WO2010029573A2 publication Critical patent/WO2010029573A2/fr
Publication of WO2010029573A3 publication Critical patent/WO2010029573A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/26—Cover or bell housings; Details or arrangements thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/04—Lubrication

Definitions

  • This invention relates to transmission system of a vehicle and more particularly relates to integrated wet clutch and damper assembly with oil management system for said transmission.
  • Wet clutches are used in vehicles to have longer life as compared to dry clutches. This is achieved through proper cooling of the friction linings so as to limit the maximum temperature of the linings, thereby reducing the wear and increasing the life.
  • a wet clutch consists of a plurality of friction discs housed inside a drum which is mounted on a drive shaft and is located close to the transmission, so as to share the oil from the transmission sump.
  • Hydraulic actuation it is conventional to actuate a wet clutch hydraulically. Hydraulic actuation, however, has its own disadvantages like the vehicle cannot be push started at the time when the hydraulic system is not working.
  • wet clutch systems In wet clutch systems a consistent flow of oil, transmission fluid or other cooling fluid is required by the clutch. Oil flows via supply channels and clutch stacks while providing cooling to clutch disks and other moving parts.
  • the existing wet clutch operations especially in which the clutch is directly or indirectly mounted on to the flywheel, experience the problem of excessive drag because of stored or dead volume of the oil in the system. Additionally it affects the fuel efficiency of the vehicle.
  • These wet clutch systems also use high volume of lubricating oil because of the storage or dead volume of lubricating oil. Apart from that, in order to have oil circulation into the complete assembly separate pump is required.
  • a proper cooling system or oil management system is needed for better heat dissipation from the clutch assemblies, without excessive drag and without requirement of a separate pump for the oil circulation.
  • the main object of this invention is to provide integrated wet clutch and damper assembly and oil management system thereof for a transmission.
  • Yet another object of this invention is to provide an oil management system for a transmission with excellent heat dissipation without any excessive drag.
  • Yet another object of this invention is to provide an oil management system for a transmission with mechanical actuation for wet clutch assembly.
  • Yet another object of this invention is to provide an oil management system for a transmission without any requirement of a pumping means for oil.
  • Yet another object of this invention is to provide an oil management system for a transmission which is simple in construction and cost effective.
  • Integrated wet clutch and damper assembly for a transmission basically comprises of clutch pressure plate, torsional damper, a guide tube, clutch release sleeve and a clutch disc pack, which includes plurality of friction discs and separator plates.
  • Said pressure plate is adapted to be fastened to flywheel.
  • Said friction discs and separator plates are assembled intermittently to each other.
  • the friction discs are fastened to the torsional damper.
  • the separator plate is provided with engaging members to engage with guiding elements of the fly wheel.
  • a guide tube is fastened to the clutch housing and a clutch release sleeve is slidingly connected to the guide tube.
  • a clutch release bearing is mounted on said clutch release sleeve.
  • Said pressure plate is provided with a biasing means.
  • the clutch release bearing actuates the biasing means.
  • the clutch release sleeve is provided with one or more ports to supply oil in to the gap between drive shaft and the guide tube.
  • the torsional damper is provided with plurality of paddles to direct oil to the friction discs.
  • the clutch pressure plate provides the axial thrust to the friction linings attached to the friction discs, for transferring the torque.
  • the torque is transferred from the flywheel, clutch pressure plate and separator plate to the friction discs and thereby to the drive shaft through the torsional damper.
  • an oil management system for an integrated wet clutch and a torsional damper assembly of a transmission.
  • an oil collection and circulation mechanism including, a clutch release sleeve, a guide tube, a plurality of paddles in the torsional damper and a baffle around the periphery of the flywheel in which the clutch release sleeve provides an inlet port to interpose the oil to the guide tube which in turn provides oil path from clutch release sleeve to the torsional damper and clutch assembly; the paddles provided in the torsional damper receive the oil from the guide tube and circulate it to friction linings of the wet clutch assembly; and a plurality of guiding elements provided in the flywheel receives the oil from friction linings of the wet clutch, a baffle provided around the flywheel, collects the oil coming through guiding elements in the flywheel, the flywheel housing is provided with plurality of guiding elements which collect the oil from the baffle and re-circulates it back to transmission. According to another aspect of the invention there is provided an oil management system for an integrated wet clutch assembly and
  • an oil management system for an integrated wet clutch assembly and a torsional damper of a transmission wherein the guiding elements in the flywheel are the cavities tailored in the flywheel.
  • an oil management system for an integrated wet clutch assembly and a torsional damper of a transmission wherein the guiding elements of the flywheel housing are cavities tailored in the flywheel housing.
  • Figure 1 is a cross section perspective view of the integrated wet clutch assembly and torsional damper according to the present invention.
  • Figure 2 is a cross section perspective view of the integrated wet clutch assembly and torsional damper according to the present invention.
  • Figure 3 is a cross section view of the oil flow path in the wet clutch assembly and torsional damper according to the present invention.
  • Figure 4 is a rear view of oil flow in and around the flywheel and flywheel housing.
  • Figure 5 is a perspective view of the separator plate.
  • Figure 6 is a cross section view of the clutch pack.
  • Figure 7 is a cross section view of the torsional damper.
  • Said integrated wet clutch and torsional damper assembly in accordance with the present invention is illustrated in figure 1.
  • Said integrated wet clutch and torsional damper assembly includes; a pressure plate (1), a torsional damper (9), clutch release bearing (10), clutch release sleeve (6), a guide tube (7), and a clutch disc pack including friction discs (3) and separator plates (2).
  • the pressure plate (1) is adapted to be fastened to a flywheel (5), which generates an axial thrust on the clutch disc pack, placed between the pressure plate (1) and the flywheel (5).
  • the clutch disc pack as can be seen in figure 5, comprises of plurality of friction discs (3) and separator plates (2), which are assembled intermittently to each other.
  • the friction discs (3) are rotatably mounted to the torsional damper (9) and are provided with friction linings (3a) which help in transferring the torque from the flywheel (5) to the torsional damper (9).
  • the flywheel (5) is provided with plurality of guiding elements (5a) customized to facilitate the oil circulation.
  • the separator plate (2) is provided with engaging members (2a) tailored to be engaged with the guiding elements (5a) provided in the flywheel (5).
  • a baffle (4) is provided around the periphery of the flywheel (5) to collect the oil coming out of the flywheel (5).
  • Said baffle (4) is housed in a recess provided in the flywheel housing (11).
  • the transmission drive shaft (8) is rotatably connected to the torsional damper (9) and transmits the torque from engine to the transmission.
  • a guide tube (7) is mounted inside the clutch housing (12) while enveloping the transmission drive shaft (S) radially.
  • the clutch release sleeve (6) is slidingly connected to the guide tube (7).
  • the clutch release sleeve (6) is provided with one or more ports (6a) to supply oil into the gap between the drive shaft (8) and the guide tube (7).
  • an internal oil passage can be created inside the clutch housing, from which oil can be supplied into the gap between the guide tube (7) and drive shaft (8).
  • the biasing means in accordance with the present invention can be a diaphragm spring or helical coil springs.
  • the torsional damper (9) is provided with plurality of paddles (9a) which help receiving oil from the guide tube (7) and direct it towards the friction discs (3) as illustrated in figure 6.
  • a means can be provided to circulate oil to the friction discs, such as an independent plate fitted with plurality of paddles or vanes. This independent plate may be mounted, either on the drive shaft (8) or inside the pressure plate (1) and will help receiving oil from the guide tube (7) and direct it towards the friction discs (3).
  • the clutch pressure plate (1) exerts axial thrust on the friction linings (3a) attached to the friction discs (3), for transferring the torque.
  • the torque is transferred from the flywheel (5), clutch pressure plate (1) and separator plate (2) to the friction discs (3) and thereby to the drive shaft (8) through the torsional damper (9).
  • An oil management system in accordance with the present invention is described herein with reference to figure 2 in which a preferred oil flow path is illustrated. Oil is introduced at a port (6a) which is provided on the clutch release sleeve (6).
  • This port (6a) interposes the oil into the gap between the guide tube (7) and drive shaft (8) which in turn provides oil flow path to the torsional damper (9) and clutch disc pack, comprising friction discs (3) and separator plate (2), as seen in figure 5.
  • the paddles (9a) provided on the torsional damper (9) receive the oil from the guide tube (7) and circulate it to friction linings (3a) attached to the friction discs (3).
  • the oil goes through the friction linings (3a) and is guided out of the flywheel through the guiding elements (5a).
  • This oil is then collected by the baffle (4) provided around the periphery of the flywheel (5).
  • the baffle (4) facilitates recirculation of the oil back to the transmission via a guiding element (Ha) provided in the flywheel housing (11) as shown in figure 3.
  • oil can be introduced into the gap between the guide tube (7) and drive shaft (8) through an internal oil passage created inside the clutch housing (12), which may provide an oil flow path to the clutch assembly including the torsional damper and clutch pack.
  • the paddles (9a) provided on the torsional damper (9) receive oil from the guide tube (7) and circulate it to the friction linings (3a).
  • the oil goes through the friction linings (3a) attached to the friction discs and is guided out of the flywheel cavity by guiding elements (5a).
  • This oil is then collected by the baffle (4) provided around the periphery of the flywheel (5).
  • the baffle (4) facilitates recirculation of the oil back to the transmission via a guiding element (Ha) provided in the flywheel housing (11) as illustrated in figure 3.
  • Oil collection and circulation in the flywheel (5) and flywheel housing (11) is separately illustrated in figure 3 while using the same reference numerals to represent the same elements as are discussed in figures 1 and 2.
  • the guiding elements (5a) and (Ha) in the flywheel (5) and flywheel housing (11) respectively are tailored cavities provided therein to assist in effective oil collection and re-circulation back to the transmission.
  • Guiding elements (Ha) provided in flywheel housing (11) receives the oil from the baffle (4) help recirculation oil back to the transmission.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

La présente invention concerne un système de gestion de l’huile pour un ensemble intégré embrayage à bain d’huile et amortisseur de torsion d’une transmission. Le système fournit un mécanisme de collecte et de circulation de l’huile qui comprend un manchon de libération de l’embrayage, un tube de guidage, une pluralité de pales situées dans l’amortisseur de torsion et un déflecteur formé autour de la périphérie du rotor et des éléments de guidage dans le rotor. Le système fournit un système de refroidissement efficace et effectif pour une meilleure dissipation de la chaleur des ensembles amortisseurs, sans traînée excessive et sans nécessiter une pompe distincte pour la circulation de l’huile.
PCT/IN2009/000446 2008-08-11 2009-08-11 Ensemble intégré embrayage à bain d’huile et amortisseur pour une transmission et son système de gestion de l’huile Ceased WO2010029573A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09812796.2A EP2324261A4 (fr) 2008-08-11 2009-08-11 Ensemble intégré embrayage à bain d huile et amortisseur pour une transmission et son système de gestion de l huile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1694/MUM/2008 2008-08-11
IN1694MU2008 2008-08-11

Publications (2)

Publication Number Publication Date
WO2010029573A2 true WO2010029573A2 (fr) 2010-03-18
WO2010029573A3 WO2010029573A3 (fr) 2010-05-06

Family

ID=42005583

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2009/000446 Ceased WO2010029573A2 (fr) 2008-08-11 2009-08-11 Ensemble intégré embrayage à bain d’huile et amortisseur pour une transmission et son système de gestion de l’huile

Country Status (2)

Country Link
EP (1) EP2324261A4 (fr)
WO (1) WO2010029573A2 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7011610U (de) * 1970-03-28 1970-07-16 Fichtel & Sachs Ag Nasslaufkupplung mit aussenliegender oelpumpe.
DE2023252B1 (de) * 1970-05-13 1971-08-26 Fichtel & Sachs Ag Naßlaufkupplung mit hydraulischer Be tatigung
BE788161A (fr) * 1971-09-10 1973-02-28 Towmotor Corp Carter d'un embrayage a fluide
US3964587A (en) * 1973-08-02 1976-06-22 Borg-Warner Corporation Control valve for a wet clutch
DE2932009A1 (de) * 1979-08-07 1981-03-26 LuK Lamellen und Kupplungsbau GmbH, 77815 Bühl Reibungskupplung, insbesondere fuer kraftfahrzeuge
EP0034404B1 (fr) * 1980-02-19 1985-07-03 Laycock Engineering Limited Embrayages à friction
US4373622A (en) * 1980-10-27 1983-02-15 Deere & Company Floating manifold
DE3047778A1 (de) * 1980-12-18 1982-07-08 Fichtel & Sachs Ag, 8720 Schweinfurt Hydraulische kupplungsbremse fuer nasslaufkupplungen
US4544055A (en) * 1982-08-31 1985-10-01 Mack Trucks, Inc. Oil shut-off device for wet clutches
GB2203217A (en) * 1987-04-02 1988-10-12 Quinton Hazell Automotive Friction clutch
US5638932A (en) * 1994-05-17 1997-06-17 Exedy Corporation Dry multi-disk clutch
JP3518959B2 (ja) * 1996-09-25 2004-04-12 株式会社エクセディ ツインクラッチ
JP2004169885A (ja) * 2002-11-22 2004-06-17 Toyota Industries Corp 湿式クラッチの冷却装置
JP3941703B2 (ja) * 2003-02-04 2007-07-04 日野自動車株式会社 オイルスプレークラッチ
JP2005133769A (ja) * 2003-10-28 2005-05-26 Exedy Corp 湿式クラッチにおけるクラッチディスク組立体

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None
See also references of EP2324261A4

Also Published As

Publication number Publication date
WO2010029573A3 (fr) 2010-05-06
EP2324261A4 (fr) 2017-12-27
EP2324261A2 (fr) 2011-05-25

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